(3R,4R)-3-methyl-4-propyl-cyclopentanone | 386272-83-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (3R,4R)-3-methyl-4-propyl-cyclopentanone
• 英文别名: (3R,4R)-3-methyl-4-n-propyl-cyclopentanone；(3R,4R)-3-methyl-4-propylcyclopentan-1-one
• CAS: 386272-83-9
• 化学式: C₉H₁₆O
• 分子量: 140.225
• InChiKey: OQIDMDSYGYPBCR-HTQZYQBOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  10
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  甲基氯化镁 、 、 Dimethylzinc 、 (R)-4-n-propyl-cyclopent-2-enone 在 氩 、 氯化铵 、 盐酸 、 乙醚 、 Brine 、 magnesium sulfate 、 甲苯 、 SiO2 、 pentane-ether 作用下， 以 乙醚 、 甲苯 、 四氢呋喃 为溶剂， 反应 1.83h， 以to give the cyclopentanone 4 (0.86 g, 63%)的产率得到(3R,4R)-3-methyl-4-propyl-cyclopentanone
  参考文献：
  名称：

  Cyclic ketones, their preparation and their use in the synthesis of amino acids

  摘要：

  提供了一种制备对映纯的化合物的方法，该化合物的化学式为：其中R和R'代表C1-C10烷基，C2-C10烯基或C3-C10环烷基，楔形符号表示(S)-或(R)-立体化学，化合物(II)中的取代基是反式的。在有机金属亲核试剂提供如上所定义的基团R和(R)-4-乙酰氧基环戊-2-烯-1-酮、(S)-4-乙酰氧基环戊-2-烯-1-酮或类似化合物之间进行共轭加成，其中乙酰氧基被另一个离去基取代，例如在乙酰氧基化合物的情况下，得到公式III或IV的反式3,4-二取代加成产物。

  公开号：

  US20050215816A1

文献信息

• CYCLIC KETONES, THEIR PREPARATION AND THEIR USE IN THE SYNTHESIS OF AMINO ACIDS
  申请人：WARNER-LAMBERT COMPANY

  公开号：EP1296921A1

  公开（公告）日：2003-04-02
• US6872856B2
  申请人：——

  公开号：US6872856B2

  公开（公告）日：2005-03-29
• [EN] CYCLIC KETONES, THEIR PREPARATION AND THEIR USE IN THE SYNTHESIS OF AMINO ACIDS<br/>[FR] CETONES CYCLIQUES, LEUR PREPARATION ET LEUR UTILISATION DANS LA SYNTHESE D'ACIDES AMINES
  申请人：WARNER LAMBERT CO

  公开号：WO2002000584A1

  公开（公告）日：2002-01-03

  A method is provided for making an enantiomerically pure compound of the formula: in which R and R' represent C1?C10 alkyl, C2?C10 alkenyl or C3?C10 cycloalkyl and the wedges signify (S)- or (R)- stereochemistry, the substituents in compound (II) being trans. Conjugate addition is carried out between an organometallic nucleophile that provides a group R as defined above and (R)-4-acetoxycyclopent-2-en-1-one, (S)- 4-acetoxycyclopent-2-en-1-one or a similar compound in which acetoxy is replaced by another leaving group to give, e.g. in the case of the acetoxy compound, a trans 3,4-disubstituted addition product of formula III or IV; The acetyl group is eliminated from the addition product to give an (R)- or (S)- 4-alkyl or 4-alkenyl cyclopent-2-en-1-one the compound of formula is then to be hydrogenated to give a cyclopentanone of formula (I) or conjugate addition of a second organometallic nucleophile that provides a group R' as defined above to the compound of the above formula may be carried out to give a trans 3,4-disubstituted addition product of formula (II). One of the above compounds may be converted e.g. via an intermediate (XV)-(XVIII) (in which the substituents R and R' and the wedges have the meanings indicated above) to a gabapentin analogue of one of the formulae shown below: in which the substituents R and R' and the wedges also have the meanings indicated above.